Kamala D. Harris won San Diego County with 56.9% of the vote, ahead of Donald J. Trump. 1,477,786 votes were counted. The party margin was a Democratic lead of 16.8 points. Compared with the previous presidential election in San Diego County that is loaded, the margin moved 6.0 points toward Republicans.
San Diego County leans Democratic by 18.8 points compared with the nation (our partisan lean index, based on president 2024 75% + 2020 25%).
San Diego County voted for the winner of the national popular vote in 5 of 7 presidential elections from 2000 to 2024. On average its margin sat 10.3 points away from the national margin.
In 2024, 1,477,786 votes were cast in the biggest race, which is 64.0% of the 2,308,265 citizens aged 18 and over in San Diego County.
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